The adducts and bi-adducts of the reaction of vinyl chloride with carbon tetrachloride, CC13-(CH,CHCI)n-C1 and CI-(CHClCH,-1,,,-CCl~--(CH~CHCI~CI, respectively, have been studied by '3C and 'H NMR. The identification of the characteristic peaks of each product enables a much better control of the pu
Analyse viscosimetrique des telomeres de l'acrylate d'ethyle et du chlorure de vinyle avec le tetrachlorure de carbone et le trichloroacetate de methyle
✍ Scribed by Y. Pietrasanta; G. Rigal; P. Schaeffner
- Publisher
- Elsevier Science
- Year
- 1981
- Tongue
- English
- Weight
- 226 KB
- Volume
- 17
- Category
- Article
- ISSN
- 0014-3057
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✦ Synopsis
R6sum6--Les t61omeres de l'acrylate d'6thyle et du chlorure de vinyle avec le t6trachlorure de carbone ou le trichloroac6tate de m6thyle pr6par6s par catalyse r6dox pr6sentent un comportement viscosi-m6trique coh6rent et diff6rent selon la nature de l'agent t61ogene. I1 est alors possible d'appliquer la viscosim6trie a la d6termination des masses mol6culaires moyennes de ce type de compos6s.
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The molecular structure of the protonated form of tisopurine, 4-thioxo-2,5H,7H '-pyrazolo [ 3,4-d ] pyrimidinium chloride, (TPH'Cl-), was determined by x-ray di †raction methods. The crystals are monoclinic, C 5 H 5 N 4 SCl space group with a = 7.332(5), b = 10.911(9) and c = 9.423(8) b = 104.99(6)Ä